1) Approved 2) Approved of odd sneer 3) Backed 4) Countersigned 5) Gave a stamp of approval 6) Gave approval to 7) Got behind 8) More than just voted for 9) Sanctioned 10) Signed over 11) Signed the back of a check 12) Spoke in favor of 13) Spoke out for 14) Supported 15) Supported as a candidate 16) Supported for president Found on https://www.crosswordclues.com/clue/endorsed